Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
||What Are Minerals?
Minerals are the building blocks of our society. We use items made with them every day.
Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.
||Diamond: The Mineral
Diamond is a mineral with unique properties and many gem and industrial uses!
|Rock and Mineral Kits
Rock, Mineral and Fossil Collections. Nice kits for personal or classroom use.
Calcite is a carbonate mineral with industrial, agricultural, medical and many other uses.
Quartz is the most abundant mineral in the crust. It has many useful properties.
Mineral Identification Chart Printable mineral ID chart by Art Crossman in MS Excel format.
Topaz is a mineral best known as a durable gemstone and its use in Mohs Hardness Scale.
Fluorescent Minerals glow with spectacular colors under ultraviolet light.
||Diamonds from Coal?
Diamonds Do Not Form From Coal That is one of the biggest misconceptions in science.
||The Acid Test
The Acid Test Geologists use dilute hydrochloric acid to identify carbonate minerals.
|Is Water a Mineral?
Are Water and Ice Minerals? Comparing their properties with the definition of a mineral.
Tourmaline - the most colorful mineral and natural gem material on Earth.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
United States Gemstones Small mines in the U.S. produce a diversity of gemstones.
Diopside - Gem material, ornamental stone, diamond indicator, industrial mineral.
Hematite - the most important source of iron ore and mineral pigment since prehistory.
Ilmenite - The primary ore of titanium and source of most titanium dioxide.
Chalcopyrite - The most important ore of copper for over five thousand years.
||Uses of Gold
Gold has unique properties that make it one of the most useful minerals.
Benitoite - discovery of the State Gem of California - USGS report from 1911.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
|Rare Earth Elements
Rare Earth Elements are used in cell phones, DVDs, batteries, magnets & many other products.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Minerals in Colored Glass - Minerals are what produce the color in colored glass.
Serpentine - metamorphic rocks used in construction, architecture and lapidary work.
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
||Uses of Silver
Uses of Silver Most people think of jewelry and coins, but silver\'s primary use is industrial.
||Fireworks & Minerals
The Science of Fireworks Learn how the colors and shapes are created.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Rhodochrosite : a manganese mineral used as an ore, a pink gem and an ornamental stone.
Tumbled Stones are rocks that have been rounded, smoothed and polished in a rock tumbler.
How Do Snowflakes Form? They start as tiny crystals. Some grow on the way down.
Spodumene is a pegmatite mineral, an ore of lithium and sometimes a gemstone.
Olivine Rain Spitzer Telescope discovered a rain of olivine crystals on protostar HOPS-68.
The Streak Test is a method to determine the color of a mineral in powdered form.
Cinnabar - the only important ore of mercury. Used in pigments until its toxicity was realized.
|Tucson Mineral Show
Tucson Gem & Mineral Show Photos from the largest gem and mineral show.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
Limonite - an amorphous iron oxide. An ore of iron and a pigment since prehistory.
|Denver Mineral Show
Denver Gem and Mineral Show - Photos and comments about this incredible show.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
Abandoned Mine Accidents kill 20 to 30 per year. Education can prevent many of them.
Triboluminescence is flash produced when a mineral is rubbed, scratched or broken.